Grain-binder



PATENTED JAN. 5, 1904.

.0. GOLAHAN.

GRAIN BINDER. PPLIUATION FILED JULY 1s, 19043.

N0 MODEL.

UNITED STATES Ifatented January 5, 1904.

CHARLES COLAHAN, 0F CHICAGO, ILLINOIS.

GRAIN-BINDER.

SPECIFICATION forming part of Letters Patent No. 748,587, dated January 5, 1904.

Application liled July 13, 1903.

To all whom it may concern:

Be it known that I, CHARLES OOLAHAN, a citizen of the United States of America, and a resident of Chicago,county of Cook, and State of Illinois, have invented certain new and usef ful Improvements in Grain-Binders, of which the following is a specication, reference being had to the accompanying drawings, forming a part thereof.

My invention has reference to mechanism accessory to tying the knot in binders of the Appleby type, and more particularly to that form wherein the cord-slot of the breastplate has an oblique angular jog having a concentric raised portion with a curved depression on its upper surface beneath the knotterjaw, over the inner inclinededge of which the cord is laid and by which it is guided close up to the spindle of the knotter, the latter normally standing with its billtrending outwardly in the general direction of the outer or return reach of said jog and past the inclined edge of the inner reach and stopping in such position after each `knot-formingl revolution. u

In a `construction wherein the upper surface of the breastplate is ilat or open under the knotter it sometimes happens while at work in the field that the jarring of the machine or the pressure of the straw, will cause one or both strands of the cord that are around the bundle beneath the breastplate i and laid over the angular jog in the cord-slotr and over the knotter to thecord-holder, particularly the strand at the outer side of the bundle, to slide around the jog in the cordslot and displace the cord, so that thertwo ends leading to the cord-holder will not be seized by the knotter-jaws as the latter close, and thus the knot fails to be formed. To remedy this, I have heretofore shown in Letters Patent N o. 690,134, granted to me Decemberl, 1901, a convex raised boss portion on the upper surface of the breastplate that is provided with a concave depression concentric with and beneath the knotter and terminates in a rounded stop setting across the longitudinal reach of the cord-slot and holds the cord up to theknotter and prevents its escape therefrom in the formation of the knot,

t as the cord-strands extending around the bundle beneath the breastplate lie within the Serial No. 165.287. (No model.)

concave depression and the knotter has formed the loop and seizedthe ends of the band ext-ending to the cord-holder and the knot is slipping od toward the point of the knotter by the time it becomes desirable to force the bundle-strands out of the depression in the breastplate, that the knot may readily slip from the knotter with the outgoing bundle. I also refer to the breastplate shown in my Patent No. 677,943, July 9, 1901, having a depression at the inner side of the knotterjaw in the outer curvature of the upper plane surface of the breastplate, to which the present invention is equally applicable.

My present invention provides means to force the band out of the projecting portion of the breastplate that retains the cord during the formation of the knot and permit the escape of the bundle-strands over the boss or outer portion of the concave depression in the breastplate, as the outward strain on the cordband by the bound bundle in pulling the loop from the knotter strips it in the process of completing the knot.

My present invention consists in mechanism providing additional forward movement or rotation of the knotter to advance the bundle-strands out of the concave depression in the breastplate as the knot is slippeddown toward the outer end of the knotter by the stress of the bundle.

The knotter in my former patents stops after one complete revolution with its point trending outwardly, while my present knotter is given an additional movement, secured by one extra gear and pinion tooth to cause the knotter to revolve slightly farther and lift the bundle-strands out of the depression in the 4breastplate to permit the egress of the strands across the knotter-face and oblique reach of the cord slot. This is accomplished by quickly. turning the knotter slightly farther forward after it has made one complete revolution and imparting aquick jerk or sudden action back to the knotter to facilitate the 'outgoing and stripping of the knot with the bundle. This is secured without materially changing the construction of the parts, as the knotter-actuating wheel has a portion of the pinion-holding stop-flange made concave just beyond the extra gear-tooth, which permits the stop-face of the pinion to tilt down suii- TOO ciently to permit the action of thepinion in revolving the knetter slightly beyond its normal position. The pinion stop-flange rises as the extra tooth is passed and rocks the knetter back toits normal position, pointing outwardly, while the binder-arm again lays the cord over the cord-supporting finger that projects across the open slot of the breastplate and across the knetter to the cord-holder.

In the drawings, Figure 1 is a plan view showing the knetter in dotted lines over the breastplate in order te clearly exhibit the cenvex raised portion en the upper surface of the breastplate that is provided with a cencave depression concentric with and beneath the 'knetter and terminating in a rounded stop setting across the longitudinal reach of A the cord-slot that holds the cord up to the knetter. In this view the parts are all in their normal position as the cord is laid by the binder-arm over the supporting-finger that extends across the open slot and over the obliquely outwardly-pointing knetter to the cord-helder, (the latter not shown.) Fig. 2 is a view of the same parts after the knetter has made one complete revolution in the formation of the knot. Fig. 3 is a view of the same after the knetter has made the additional further movement with the extra gear-teeth t-o force the bundle-strands out of the concave depression in the breastplate. Fig. 4 is a view showingthe knetter restored to its normal position as the knot escapes with the outgoing bundle, in which position the parts remain for the repetition of the operation, as shown in Fig. l. Fig. 5 is a side elevation of the knetter drive-wheel, its gearteeth, and cam-stop. Fig. 6 is a sectional view on line 6 6 of Fig. 5, showing the knetter gear-teeth, and cam-track, also the knetterpinion, its stop-surface in dotted lines. This view illustrates the action of the parts at the moment the additional movements arebeing imparted :to place the knetter in positions shown in Figs. 3 and 4.

In the drawings, A represents the breastplate; A', the knetter; a, the open binder-arm slot in the breastplate; a', the cord-supporting finger in the open slot; B, the depression in the upper raised surface of the breastplate, which is the same as shown in my former patent, No. 690, 134.

B is the convex raised boss at the outer edge of the depression beneath the knetterjaw to deflect the escaping strands.

C is the cam-track, actuating the frictionwheel of the vibrating knetter-jaw.

D is the knetter drive-wheel; D', its camtrack and stop-motion surface; E, the knetter driving-gear teeth; E, the knetter-pinion; E2, the drive-pinions that actuate the cordholder, (not shown;) e, the extra drive-gear tooth that imparts the additional movement to the extra tooth e of the knetter-pinion; e2, the straight cam stop-motion surface track of the knetter-pinion.

d is the concave surface of the cam-track of the drive-wheel that-admits the turning down of the cam-stop e? asntheextra toet-h imparts additional rotary movement to the knetter.

d' is the upwardly-inclined surface of the cam-track that restores the pinion and knotter to its normal position.

In operation the band being placed around the bundle over the extended finger in the cord-slot and across the outwardly-pointing` oblique knetter-jaw in the usual well-known manner,asindicated in Fig.1,theknotter performs one complete revolution in formation of the knot,bringin g the cord or band as shown in ndotted lines in Fig. 2, the bundle-strand extending down around the bundle beneath the breastplate and lying in the depression at the upper side of the knetter, which at this moment gives a quick jerky movement forward, as shown in Fig. 3,which causes theband to slip out-of the depression across the face of vthe knetter and oblique face of the slot, when the reverse movement places the knetter tothe position shown in Fig. 4 as the-bundle isdischarged. As has been stated, this quickforward-and-back movement of the knetter is imparted by the extra gear-.teeth and stopmetion that actuates the knetter. There is a further advantage in this extra forwardand-return movement of the knetter after completing its full revolution from the normal position in which it stands withjaws trending outward in the direction ofthe ebliqne reach of the cord-slot, which advantage is entirely independent of the depression in IOO the breastplate on the upper side of the knotin the jaws and grasped thereby as is desirable, particularly after the parts areworn. The additional movement beyond the complete revolution enables the grasp to be kcertain, and the return movement te the outwardly-trending position of rest permits Vthe knot to be stripped not only in the usual way, but also in much more reliable condition.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a grain-.binder the combination with a knetter that normally rests with its jaws trending outwardly in the direction of discharge of thebundle, of a stop at the inner side of the knetter for obstructing the escape of the .cord-strandsleading round the bundle, mechanism for giving the knetter acomplete revolution for laying the knot, and mechanismfer imparting to said knetter a quick forward and 4return movement at the conclusion of said revolution, to lift the cord-strands IIO reach, having a concave depression at its reentrant angle below the knetter to temporarily detain the cordstrands during the formation of the knot, with a knetter making one full revolution to lay the knot, and mechanism imparting an onward and return movement to the knetter substantially as shown and described.

3. The combination of the breastplate having an angular slot and the projecting cordsupporting linger over the slot for receiving the cord as the bill rests in its normal position, pointing outwardly parallel with the eblique face of the angular slot, said breastplate having a depression therein at the reentrant angle wherein the cord rests in the formation of the knot, and means for imparting to the knetter its knot-laying revolution and a quick forward and backwardv movement after the completion of its knot-layingV revolution, to force the cord from the depression and permit it to pass outwardly there` from in the discharge of the bundle substantially as shown and described.

4. The combination with the angularlyslotted breastplate having a cord-stop as set forth, of the knetter normally standing with its jaws trending outwardly in the direction gagement with the track whereby the knetter is given a quick onward and return movementat the termination of its complete revolution to release the knot therefrom.

5. The combination with the angularlyslotted breastplate, of a knetter or tying-bill normally standing with its jaws trending ontwardly in the direction of the oblique reach of the slot, mechanism imparting to the knot- `ter a single complete revolution from said position of rest, and mechanism imparting thereto at the completion of said revolution, an additional onward and quick return movement from and to said position of rest.

CHARLES ooLAHAN.

Witnesses:

M. H. COLAHAN, L. RANDLE. 

